Augustus c



, 1 UNITED STATES PATENT OFFICE.

' nueu'srus o. PALMER, on UTIOA, NEW YORK.

ELECTRIC ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 289,552, dated December4, 1883.

Application fileil November 4, 1882. (No modeLl I To all whom it mayconcern:

Be it known that I, AUGUSTUS O. PALMER, a citizen of the United States,residing at Utica, in the county of Oneida and State of New York, haveinvented a new and useful Improvement in Electric Annunciators, of whichthe following is a specification, reference being had to theaccompanying drawlngs.

My invention relates to electric annunciators for hotels,burglar-alarms, &c.; and it consists in the construction of theindicator and mechanism for operating the same, hereinafter described,and specifically pointed out in the claims.

In the drawings, Figure 1 is a plan view of a device embodying myinvention, the indicator being in position to expose its face to view.Fig. 2 is a plan View of the same device, the indicator being turned sothat its face is unexposed. Fig. 3 is a front view, and

Fig. 4 a side View, the indicator being in position shown in Fig. 1, apart of the magnet being broken away in Fig. 4.

The frame, having the base A and vertical part B, is such as is adaptedto be fixed in the location or case in which the device is to be placedand for supporting the operating parts.

Inthe base A is fixed, in suitable position, an

electro-magnet, 0. To the vertical part B is pivoted one end of a lever,l), as shown, having fixed thereto an armature, E, in proper relation-tothe poles of the magnet C. At the other end of the lever D is formed ahook or latch, F. This hook or latch has an upper beveled or inclinedplane, a, and a vertical plane or surface, b, for a catch. To the base IA is fixed a vertical standard, G, to which is pivoted the indicator orplate H. This plate is so formed as to have fixed thereto, or as partsof the same piece of metal therewith, projections c and d at rightangles to the plane of the plate, by which the plate is pivoted on thestandard G, so as to swing about a vertical central line. A wire or rod,I, or its equivalent, is fastened to the plate H, by which there is anarm, 6, above the plate and about parallel to the plane thereof, and anarm, f, below the'plate. The arm f is bent or formed as shown, so that apart thereof extends tothe standard, and the other end, 2', bearingagainst the rod I. This spring acts to swing the plate H and rod I, soas to carry the same from position illustrated in Fig. 2 to positionshown in Fig. 1.

The operation is as follows: The plate or indicator H being in positionto present its edge to the front-that is, so that its face will not beexposed to view-and the arm 6 resting in the hook or latch F and beingheld thereby, when an electric current is sent through the coils of themagnet, the armature attracted to the magnet, and the outer end of thelever D carried downward, the arm 6 is released from the hook or catch Fand the spring 9! swings the plate or indicator H into position, wherebyits face is parallel with the front and brought to view. By means of thearm f the plate H is swung back to its former position and the arm 6slides over the inclined plane a, pressing the lever D and latch Fdownward, and is caught by this latch when thrown upward by the springJ, the electric circuit having been broken, and hence the armature andlever not being drawn toward the magnet.

Instead of putting the figure j or other mark or sign directly on theface of the plate H, I form the same on a separate plate or card, K,which may be held to plate H by means of small projections or fingers isat the bottom and sides of the plate H. These projections or fingers maybe cut out and bent up from the same piece of metal of which is theplate H. The card K may be readily slid into place on the plate H, orreadily removed and another having a different number or mark thereonsubstituted therefor.

I claim as my invention 1. The combination of the plate H, havingprojections cand cl, standard G, arm 0, spring g, and latch F,substantially as and for the purpose set forth.

2. The combination of the plate H, having sea,

projections c and (1, vertical standard G, and arm f, located and formedsubstantially as described.

3. In an electric annunciator, the combination of these elements,namely: a plate or indicator, H, pivoted to swing about a verticalstandard, and having projections or fingers k at the lower and sideedges thereof, and aseparable card, K, substantially as specified.

4:. In an electric annunciator, the combina tion of these elements,namely: an el.ectro magnet, an armature pivoted in such a manner as tohave movements in a vertical direction, a latch attached to saidarmature, a plate pivoted in such a manner as to swing about a verticalline, an arm attached to said plate to engage with said latch, a springadapted to swing; said plate when said arm is released by the latch, anda removable card on said plate, substantially as set forth.

AUGUSTUS O. PALMER. 'Vitnesses:

ANDREW R. BENNETT, DAvID J. Evans.

